A person with horns.
No, not that person, the other person.
NO! Remove all shapes, they're all wrong.
Now add the person facing forwards.
Correct. Add the lamp.
No, not that one. The lamp with the big lampshade.
Again, no. The tall floor lamp with the big lampshade.
Correct. The shape with the five-sided hole cut in the middle.
No, not that one. Try again.
Add the shape with a hole cut in the middle.

Outcome: unsuccessful
Speaker comments: Bot repeatedly did the wrong thing, adding shapes that were not the one I described, and adding shapes when I told it to remove wrong answers.